/** Find the nearest .lintcn/ directory by walking up from cwd.
 *  Returns the absolute path to the directory, or null if not found. */
export declare function findLintcnDir(): string | null;
/** Find .lintcn/ or throw with a helpful error. */
export declare function getLintcnDir(): string;
/** Find .lintcn/ or throw — for commands that require it to exist. */
export declare function requireLintcnDir(): string;
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